Lift check valve 70N

Ybackflowfor water systems

Description
The 70N check valve (lift type) from the 700 Sigma Series is a non-slam, non-return globe valve with an oblique (Y) body design. It opens to allow flow in the required direction and closes drip‑tight to prevent backflow. The valve features a raised stainless steel seat and a removable internal assembly that can be serviced in‑line as a single unit. The hydrodynamic body provides an unobstructed flow path and minimizes pressure loss.

Features & Benefits

• Non-slam closing to reduce system surge
• Drip-tight sealing for reliable backflow prevention
• Y-pattern, wide body — reduced pressure loss
• Semi-straight flow path — low turbulence
• Stainless steel raised seat — cavitation resistant
• Full bore design — obstacle-free flow
• In-line serviceable with removable internal assembly
• Flexible configuration to add control accessories
• Designed for potable and functional water applications
• Complies with EN-1074, NSF/ANSI 61-372, WRAS, AS 5081 and other standards

Typical Applications

• Check valve for pumping and booster stations
• Prevent backflow in uphill and vertical pipelines to reduce surge
• Ensure one-way flow in water distribution and industrial systems

Technical characteristics / Specifications

• Model: 70N (part of 700 Sigma Series)
• Product type: Check valve, lift type (non-return)
• Design: Oblique (Y) pattern globe valve with raised seat; removable internal assembly
• Flow path: Hydrodynamic body for unobstructed flow; semi-straight, full bore
• Seat: Raised stainless steel seat (cavitation resistant)
• Closure: Non-slam, drip-tight
• Service & maintenance: In-line serviceable; internal assembly removable as a single unit
• Materials: Suitable for potable and functional water applications
• Series: 700 Sigma Series
• Standards / Certifications: EN-1074, NSF/ANSI 61-372, WRAS, AS 5081 (and others)
• Internal reference / barcode: 30354